64125543 has 8 divisors (see below), whose sum is σ = 85735168. Its totient is φ = 42633144.

The previous prime is 64125511. The next prime is 64125563. The reversal of 64125543 is 34552146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64125543 - 2⁵ = 64125511 is a prime.

It is a super-2 number, since 2×64125543² = 8224170530089698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64125543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64125563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28021 + ... + 30222.

It is an arithmetic number, because the mean of its divisors is an integer number (10716896).

Almost surely, 2^64125543 is an apocalyptic number.

64125543 is a deficient number, since it is larger than the sum of its proper divisors (21609625).

64125543 is a wasteful number, since it uses less digits than its factorization.

64125543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58613.

The product of its digits is 14400, while the sum is 30.

The square root of 64125543 is about 8007.8425933581. The cubic root of 64125543 is about 400.2613770845.

Adding to 64125543 its reverse (34552146), we get a palindrome (98677689).

The spelling of 64125543 in words is "sixty-four million, one hundred twenty-five thousand, five hundred forty-three".